Evaluation of clinical application of multi‐slice computerized tomography in primary retroperitoneal tumors

Abstract

Background To accurately identify primary retroperitoneal tumors by multi‐slice spiral CT (MSCT) for better treatment. Materials and Methods The common types of 380 cases of primary retroperitoneal tumor, lesion sites, and MSCT features were compared with pathological results. Fisher's or chi‐square test approaches have been applied in this study. Results Multi‐slice computerized tomography multi‐directional reconstruction has a high accuracy for primary retroperitoneal tumors (95.7%). Seventy‐three liposarcoma cases were located in peri‐renal space, accounting for 76.8% (13/95) of the tumors in this region. Meanwhile, 65 cases of neurogenic tumors were located in the paravertebral column, accounting for 90.3% (65/72) of the tumors in this region. MSCT examination could effectively distinguish benign from malignant of primary retroperitoneal tumor (sensitivity = 87.2%, specificity = 82.7%, accuracy rate = 84.5%). Malignant tumors showed more irregularity shape than benign tumor (χ2 = 20.468, P < .001). 82.7% (191/231) of the malignant tumors showed adhesion or even invasion of surrounding tissues and organs (χ2 = 23.262, P < .001). Fat density of the lipoma is uniform, and lesion is not enhanced. Liposarcoma can be seen in varying proportions of fat and soft tissue density. Conclusion The accuracy of MSCT scan for retroperitoneal tumors is high. Meanwhile, the coincidence rate of qualitative diagnosis before operation and/or before biopsy is also high.

CT Rendering and Radiomic Analysis in Post-Chemotherapy Retroperitoneal Lymph Node Dissection for Testicular Cancer to Anticipate Difficulties for Young Surgeons

“…Nowadays, medical image analysis, particularly computed tomography and magnetic resonance imaging, has grown exponentially and helps to plan surgical procedures more precisely, leading to less invasive and more informative diagnoses. Although these tools provide high-resolution two-dimensional images, their ability to describe complex three-dimensional structures is limited [ 14 ].…”

“…This ability has proven useful for the visualization of complex structures such as congenital heart defects and aneurysms. However, the differences between the real anatomical structures and the interpretation of virtual images in three dimensions are still being studied [ 14 , 15 , 16 , 17 ].…”

Liposarcoma retroperitoneal gigante bien diferenciado, un reporte de caso

“…Con respecto al diagnóstico, es necesario realizar una TC con contraste o una RM [13] , siendo la más utilizada la TC, debido a que es menos sensible a los artefactos de movimiento, define mejor la relación anatómica del tumor con otros órganos abdominales y distingue eficazmente los tumores retroperitoneales benignos y malignos, con una sensibilidad del 87,2 % [14,15] . Las imágenes tomográficas suelen mostrar una lesión lipomatosa en el retroperitoneo con o sin nódulos sólidos, que desplaza los órganos abdominales hacia la periferia [16] .…”

A 47-year-old female with primary hepatoid adenocarcinoma in the pelvic retroperitoneum

“…While ultrasonography is the preferred method of pelvic examination in females, it is susceptible to influences such as intestinal gas and frequently struggles to discern lesions due to the pelvic retroperitoneum. Enhanced CT is a valuable imaging method for evaluating the retroperitoneal tumor location, size, origin, and relationship to adjacent tissues and organs ( 16 ). However, CT is not fully applicable to the uterus and its appendages.…”